Air fryers are famously easy to use – but do you know how to unlock your favourite kitchen gadget’s full potential? To help you air-fry your way to the tastiest, crispiest, best-looking food around, we’ve compiled a list of the most common air fryer mistakes, with tips and tricks on how to prevent them (and what to do instead). How much should you fill your air fryer? What needs oiling, and what doesn't? What are the best air fryer recipes? We've covered every angle, so read on and you’ll be an expert in no time.